If you enabled Outbound Scanning (described above), mail going out to the Internet will be scanned for both virus and spam. In many cases, scanning outgoing mail for spam may not be necessary if there is no probability of local users sending spam. Some of the legitimate outgoing mail may looks like spam, and they may be tagged as spam before getting sent to the recipient. This section describes how to exclude outgoing mail from being scanned for spam.
Go to Content And Policy Enforcement (CAPE) Center :: Mail Filters :: Spam Filter Settings :: Outbound Spam Protection. Here you can define whitelists for domains excluded from spam scanning.
For example, if your domain is corp.guardiandigital.com, you probably don't want mail from the domain corp.guardiandigital.com to be spam scanned. In this case, you need to create an Outbound Domain Whitelist entry for the domain corp.guardiandigit-al.com.
To create a new whitelist entry, click New Outbound Whitelist Entry. A pop-up window will come up. Enter the domain name in the field Pattern. You may choose to create an additional entry for all sub-domains.
Once created, the entry will be listed in the Outbound Domain Whitelist. In the example, all mail from corp.guardiandigital.com (Eg: mail from admin@corp.guardiandig-ital.com) will not be scanned for spam. The entry .corp.guardiandigital.com stands for all sub-domains of the domain corp.guardiandigital.com. (Eg: hr.corp.guardiandigita-l.com).